Employee Benefit Plans (Details 3) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($)
DB Pension Plan
Actuarial loss	$ 965
Prior service cost	(10)
Total	955
Life and Healthcare Plan
Actuarial loss	12
Prior service cost	16
Total	28
SERPs
Actuarial loss	365
Prior service cost	87
Total	$ 452

Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation).

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration